Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270695AbTHJVFk (ORCPT ); Sun, 10 Aug 2003 17:05:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270700AbTHJVFj (ORCPT ); Sun, 10 Aug 2003 17:05:39 -0400 Received: from miranda.zianet.com ([216.234.192.169]:30988 "HELO miranda.zianet.com") by vger.kernel.org with SMTP id S270695AbTHJVF3 (ORCPT ); Sun, 10 Aug 2003 17:05:29 -0400 Message-ID: <3F36B341.7@zianet.com> Date: Sun, 10 Aug 2003 15:04:01 -0600 From: kwijibo@zianet.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030529 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andi Kleen CC: Dave Jones , richard.brunner@amd.com, linux-kernel@vger.kernel.org Subject: Re: Machine check expection panic References: <3F3182B5.3040301@zianet.com.suse.lists.linux.kernel> <20030807002722.GA3579@suse.de.suse.lists.linux.kernel> <3F35FE5B.7060003@zianet.com> <20030810130752.GB586@wotan.suse.de> In-Reply-To: <20030810130752.GB586@wotan.suse.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1610 Lines: 54 Out of curiosity I decided to try this on some other Athlon systems I have. I tried it on a dual Athlon MP 2400(2GHz) system with a Tyan 2462 motherboard. Also I tried it on a single Athlon XP 1800 with a Asus A7V motherboard. They both booted fine with the 2.6.0-test2 kernel and the machine exception code in it. So I am thinking either it is something with the older CPU's or the CPU is actually borked. Like I said though I have been using those 1.2GHz processors for a long time with no problems. Steve Andi Kleen wrote: >>The CPU's aren't overclocked and have worked fine for >>me under much heavier loads than booting a kernel for >> >> > >It could be corrected ECC errors in the cache. If that >happens I would consider it a hardware problem > >(now hidden with the disabled bank). > > > >>at least a year. Using the 2.4 kernel that is. Once >>I remove the exception code from the kernel it boots >>fine and runs fine under any load I put it under. >> >> > >I maintain that such a magic hack needs at least a big fat comment. > >I still find the change very suspicious, there isn't any errata that >says that bank 0 is bad on Athlon. > >Also disabling a whole bank just for some buggy CPUs is quite a sledgehammer, >it would be probably better to identify the bank 0 sub unit that causes it >and only turn that off. > >-Andi > > > > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/